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The Wehrli L5P Duramax thermostat housing is a direct replacement for 2017–2025 6.6L Duramax applications, finished in kiwi green powder coat to tidy the engine bay and match other WCFab components. It swaps in for the OEM housing without modification and is offered in multiple powder-coat colors so you can coordinate with intake kits, intercooler piping and upper coolant pipe for a coordinated, showroom-ready appearance.
Wehrli L5P Duramax Thermostat Housing - Kiwi Green
